10.3.2 The global TODO list

The global TODO list contains all unfinished TODO items formatted and
collected into a single place. Remote editing of TODO items lets you
can change the state of a TODO entry with a single key press. The commands
available in the TODO list are described in Agenda commands.

C-c a t

Show the global TODO list. This collects the TODO items from all
agenda files (see Agenda Views) into a single buffer.